Question

我正在使用GL_TEXTURE_2D_ARRAY将多个纹理发送到片段着色器。

int width, height;

unsigned char* image1 = SOIL_load_image("border_small.png",&width, &height,0,SOIL_LOAD_RGBA);
unsigned char* image2 = SOIL_load_image("tile1_small.png", &width, &height,0,SOIL_LOAD_RGBA);


glActiveTexture(GL_TEXTURE1);
GLuint textures;
glGenTextures(1, &textures);
glBindTexture(GL_TEXTURE_2D_ARRAY, textures);
glUniform1i(glGetUniformLocation(p_myGLSL->getProgramID(),"baseTextures"), 1);

glTexStorage3D(GL_TEXTURE_2D_ARRAY, 1, GL_RGBA, width, height, 2);

glTexSubImage3D(GL_TEXTURE_2D_ARRAY,
                0,
                0,0,
                1,
                width, height,
                1,
                GL_RGBA,
                GL_UNSIGNED_BYTE,
                image1);

glTexSubImage3D(GL_TEXTURE_2D_ARRAY,
                0,
                0,0,
                2,
                width, height,
                1,
                GL_RGBA,
                GL_UNSIGNED_BYTE,
                image2);

glTexParameteri(GL_TEXTURE_2D_ARRAY,GL_TEXTURE_MIN_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D_ARRAY,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D_ARRAY,GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D_ARRAY,GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);

片段着色器：

layout (binding = 1) uniform sampler2DArray baseTextures;
FragColor = texture(baseTextures, vec3(TexCoord.xy, 0));

代码生成一个空白屏幕。我该如何解决这个问题？

Answer 1

您似乎正在复制纹理单元的offset = 1 and 2中的数据，但是在片段着色器中读取offset = 0。

GL_TEXTURE_2D_ARRAY绑定空白屏幕

1 个答案: